Insulin-like Growth Factor 1 (IGF-1) proteins are signaling molecules crucial for growth and development. They belong to the family of insulin-like growth factors and play a key role in regulating cell growth, differentiation, and survival. IGF-1 is produced in response to the stimulation of growth hormone and is involved in various physiological processes, including promoting the growth of bones, muscles, and other tissues. Additionally, IGF-1 has been studied for its potential role in aging, metabolism, and various health conditions.